<div style="width: 100%;height: 100%;background-color: red;">
    <div class="container" style="position: absolute; left:1%;top:1%;width:95%;height:97%;text-align: center;overflow-y:auto;">
        <div id="backpanel" class="menu">
            <!--运行-->
            <div id="box">
                <div class="item">
                    <button id="id_content_set_shutdown" style="left:20%;top:5%;width: 20%;height: 120px;" type="button" class="btn btn-primary blue">关机</button>
                    <button id="id_content_set_restart" style="left:60%;top:5%;width: 20%;height: 120px;" type="button" class="btn btn-primary blue">重启</button>								
                </div>
            </div>							
        </div>
    </div>
</div>